Current Production
Prospex Save the Ocean Special Edition
SEIKO SRPF77
MSRP
$625 USD
Verified Aug 18, 2026
Case diameter45 mm
Lug-to-lug47.7 mm
Thickness13.22 mm
Case materialStainless steel
CrystalSapphire crystal
Water resistance200 m
MovementAutomatic, Caliber 4R36, 21,600 vibrations per hour, 24 jewels, Power reserve: approximately 41 hours
Calibre4R36
Power reserve41 hours
DialBlue
Bracelet or strapDeep blue silicone strap
Specifications as published by Seiko →
Last verified Aug 18, 2026